Transmission-gearing



F G. THOMAS TRANSMISSlUN BEARING,

APPLICATION FILED APH.;1,1920;

L h H INVENTOR ATTORNEY WITNESS ES.

F. G. THOMAS, I TRANSMISSION (BEARING. APPLICATION FILED APR.5,1920.'

Patented June 21, 1921.

2 SHEETS-SHEET 2- j? G/mmms.

wvmssssi K Astoria,

rams. e. THOMAS, es

AEITQHEA, CREGUN.

Application filed April 5,

Tooll whom it may concern Beit known l, FRANK (1+. THOMAS, e. subject tothe King of Greece, residing at in the county or" Clatsop and State ofOregon, have invented new and useful improvements inTransmission-Gearing, of which the following is s specification.

This invention relates to transmission gearing for automobiles and thelike and one of the objects of the invention is to provide means wherebythe transmission lever is rocked hack and forth in a straight horizontalline to move the parts for reverse and high and low speeds.

Another object of the invention is to so arrange the parts that thegears on the drive shaft and on the driven shaft are always in mesh andto provide means for locking the desired gear on "the driven shaft tothe said. shaft by the movement of the hand lever.

Still another object of the invention is to provide a plurality of.spring controlled keys for locking the gears to the driven shaft and aslidable member, actuated by the hand isver, "for controlling said keys.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts to hehereimatter fully described. illustrated in the accompanying drawingsand; specifically pointed out in-the app-ended claims. 7 I

- in describing my invention in detail, reference will he lied to theaccompanying drewings wherein like characters denote like vor corresofinding parts throughout the sev eral views, end in which-- Figure 1 isa longitudinal sectional view of the invention.

Fig. 2 is a section on line 2--2 of Fig. 1.

Fig. 3 is a longitudinal sectional viewon line 3--3 of Fig. 1. I

Fig. i is e sectional View of the reversing gears.

Fig. 5 is a detail view. In these views 1 indicates the drive shaftwhich is driven from the engine and 2 indicates the driven shaft,portions of these shafts being journaled in the gear casing 8. Thecasing is provided with a tubular extension 4 wh'ch surrounds the rearpart or" the driven shaft 2 and the end of said driven shaft is reducedand receives a beveled gear 5 which is adapted to mesh with the gear 5connected with the differential.

The front part of the casing 3 is also pro- Sgecificetion ct Lettersftatent.

' the entrance of the 1.5325. Sei'isi IEO. $71,525:;

vided with an extension e which i in alimement with the extension endthese extensions form guidewaysfor a slidaole sleeve 4 which surroundsthe shaft 2 and passes through the housing or casing 3. This sleeve iskeyed on the shaft 2, as shown at 8, so that it is held againstrotation. The casing 3' is provided with a partition 9 through which theshafts and sleeve pass and this per ition and the end wall of the casingsupport hearings for the shaft 10 which carries a double reversing gear11. Another reversing gear 12 is keyed to the shaft 1 end this gear 12meshes with the ll one this gear ll meshes with a lor e revere ff gear13 rototai'ily mounted on t is sleeve 7. A. low soeed gear 1% is locatedon the other side the partition 9 and this gear is connected with thegear: 12 by the sleeve 15. the two gears and the sleeve being formedintegral with each other. This gear 14 meshes with the large low speedgear 15 which is rotatably mounted on the sleeve 7. it also key to theshaft 1 the two intermediate speed gears 16 and 17 and the high speedgear These three gears mesh with the gears 19, 20 and 21. rotstehly.

mounted on the shaft 2. It will thus be seen that all the gears are inconstant mesh with each other and that the gears on the driven shaft 2wili as idle gel-ire until locked said shaft. J

The means for iocking the desired gear" to said 2 comprises number ofkeys or slidin "pistes 22, one for each of the gears carried the drivenshaft. These keys are located in slots 23 formed in. the shaft 2 and thekeys are ressed outwardly by the springs 24; in the said slots. Econ ofthe freely mounted gears is provided with e. notch 25 in its innercircumference to receive its key, said notch having one oi. its wallstapered off es at 25' for fecilitetizi'g key into the slot. The sleeveis provided with a slot Y heving its end well under cut to engage theinclined Walls formed on the outer end of the keys. This slot is soarranged. that as the sleeve is moved longitudinally on the shaft 52, itwill uncover the keys one at a time so as to permit the springs to forcethe key through the slot and into engagement with the notchie the gearwhen said notch is brought around opposite the key. All the other keyswill he held in their openings icythe sleeve so that but one out thegears will be attached to the shaft at a time. When' the sleeve is movedto place the slot 7 opposite the partition 9 all of the keys Will beheld in their holes and thus the parts will be in neutral position andthe driven shaft 2 will not be rotated.

The sleeve is reciprocated by means of the hand lever 26 which isarranged to be operated by the operator of the automobile, and isconnected to said sleeve by the rod 27.

When it is desired to reverse the automo bile the hand lever 26 is movedaway from the driver so as to bring the slot in the sleeve opposite thefirst key to permit said key to engage with the reverse gear 13. Vhenthe automobile is to be driven in a forward direction the hand lever smoved toward the driver so as to cause the lever to push the vreversekey in and then the slot in said sleeve will pass to its neutralposition and will then come opposite the second key and permit thesecond key to engage the gear 15, which is the low speed gear. When theclutch is thrown in the automobile will move along at low speed. Thenthe hand lever is moved again so as to cause the sleeve to push in thesecond key and permit the third key to engage the first intermediatespeed gear. After the automobile picks up spec 1 on this gear the sleeveis moved again to bring its slot opposite the-key of the secondintermediate gear and finally the sleeve is moved to bring its slotopposite theg-key of the high speed gear. As will be seenthe movement ofthe hand lever is in a straight line and its various positions will besuitably marked on the floor or other party-of the automobile so thatthe driver can tell" I v In testimony whereof Iaflix the exact positionsof the lever. i

While I have shown the driven shaftv as eeann parts, provided that suchchanges fall within the scope of the appended claim.

What I claim is I Transmission means of the class described comprising acasin having a partition therein, a drive shagt extending into saidcasing, gears keyed to said part of the shaft within the casing, asleeve mounted on said shaft and extending through the partition, a gearformed at each end of'said sleeve, a stub shaft mounted in the casing,reversing gears carried thereby, one ofwhi'ch engages one of the gearson the sleeve, a driven shaft in the casing, extensions on the casininclosing the ends of said driven shaft, a s eeve having slidingmovement on the driven shaft said key, gears rotatably mounted on thesleeve and meshing with the 'ge ars on the "drive shaft and with one ofthe reversing gears and a hand lever for movingrthesleeve on the drivenshaft. w

my si ature. FRANK G. THOil As.

